Apparatus for spraying container parts



1945. P. E. PEARASON ET AL 3 1 APPARATUS FOR SPRAYING CONTAINER PARTSFiled May 7. 1942 l2 Sheets-Sheet,1

Dec. 4, 1945. P. E. PEARSON ETAL- 2,390,457

I APPARATUS FOR SPRAYING CONTAINER PARTS l2 Sheets-Sheet 2 Dec. 4, 1945.P. E. PEARSON ET AL APPARATUS FOR SPRAYING CONTAINER PARTS l2Sheets-Sheet 3 Filed May '7, 1942 @541 moww,

Dec. 4, 1945.

P. E. PEARSON ETAL APPARATUS FOR SPRAYING CONTAINER PARTS Filed ma '7,1942 K l2 Sheets-Sheet 4 Dec. 4, 1945; 'P. E. PEARSON ETAL ,4

APPARATUS FOR SPRAYING CONTAINER PARTS Filed May 7, 1942 12 Sheets-Sheet5 1-1- fill 12 sheets-sheets P. E. PEARSON ETAL Filed May 7. 1942APPARATUS FOR SPRAYING CONTAINER PARTS 9N mm mm nu Ugo-4, 1945,

Qhnh v mmw RN Dec. 4, I945. PQE. PEARSON ET'AL APPARATUS FOR SPRAYINGCONTAINER PARTS Filed May 7, 1942 12 Sheets-Sheet? Dec. 4, 1945.

P. E. PEARSON ETAL APPARATUS FOR SPRAYING CONTAINER PARTS 12Sheets-Sheet 8" Filed May; '7. 1942 owmu no 20....(POQ

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V @Ziwuwm .ovw MN 92 .n owm v Dec. 4, 1945. RE. PEARSON ETAL I{\PPARATUS FOR SPRAYING CONTAINER PARTS Filed May 7, 1942 1 1945. P. E.PEARSON ETAL' 2, 7 I APPARATUS FOR SPRAYING CONTAINER PARTS Filed May 7}1942 12 sheets-sheet 1o FIRST spmv POSITION P. E. PEARSON ETAL,APPARATUS FOR SPRAYING CONTAINER PARTS Filed Kay 7, 1942 12Sheets-Sheet 11 Dec. 4, 1945. P. E. PEARSON ETAL APPARATUS FOR SPRAYINGCONTAINER PARTS Filed may 7, 1942 12 Sheets-Sheet 12 n 555% m2: I T- 7my 1 m gm mm Q WNW AM QNN Fm MM Patented Dec. 4, 1945 APPARATUS FOR SPRAYING CONTAINER PARTS Paul E. Pearson and Alfred Tref'f, Chicago, IlL,

assignors to Continental Can Company, Inc.,,

New York, N. Y., a corporation of New York Application May 7, 1942,Serial No. 442,090

40 Claims.

The invention relates generally to coating ap- Daratus primarily seeksto provide a novel machine structure in which the cone tops intendedtobe assembled on can bodies can be rapidly and efficiently given aninterior protective coating which is of uniform thickness despite theconiform shape of the cone tops. h

In the spray coating of containers or like articles the method ofrotating the articles While applying a spray coating to surfaces thereofhas been commonly practiced but these articles have hadsurface areaswhich were so shaped that no difhcult problems have been presented inapplying to these surfaces a coating of satisfactory uniform thickness.When it is attempted to coat articles of irregular shape and varyingdiame ters, such as the cone tops which are commonly affixed to theupper ends of certain forms of containers, difficult problems arepresent'ed'in attempting to apply coatings of uniform thickness atallportions of the coniform surfaces. When it is attemptedto spray suchconiform surfaces in the usual manner of directing a concentrated sprayfrom a stationary spray nozzle onto a small area of a surface beingmoved relatively to the nozzle, or from a moving spray nozzle onto astationary surface, it is'impossible to move the spray longitudinally ata uniform rate relative to the axis of the rotating cone, or to move therotating cone ata uniform rate in the direction of its axis relative toa stationary spray, because when it is attempted to doso the all oversurface coating resulting from the merging of the spirally appliedconcentrated spray will be non-uniform in thickness, said coatingincreasing in thickness toward the'small diameter mouth portion of thecone top because of the gradually decreasing area provided at thatportion of the cone top on which to receive the spray coating beingapplied at a uniform rate,

Therefore, it is a primary object of the present invention to provide anovel apparatus for spraying cone tops embodying means for presenting acone top means for and the coating applying spray in cooperativerelation, imparting rotation to the cone tops, and means for bringingabout relative movement between the cone top and the spray for causingthe spray to move along the axis of the rotating cone top, or the conetop to move in the direction of its axisrelative to the spray, atgradually increasing speed as the mouth or small diameter portion of thecone top is apthe concentrated spray thus spirally applied to beofuniform thickness throughout the interior surface of the cone top. 7 I

Another object of the invention is to provide a machine or apparatus ofthe character stated including a turret having thereon a plurality ofrotatable chuck spindles, a chuck on each spindle for removably holdinga cone top in position to be sprayed, a cone top body spraying station,a cone top heel spraying station, means for indexing the turret tosuccessively present the chucks at a cone top receiving station, at thetwospraying stations, and at a sprayed cone top discharging station,means at the receiving station for feeding and applying cone tops to thechucks, means at the respective spraying stations for imparting rotationto the chucks and cone tops and for imparting liftingand loweringmovement. to the chucks and cone tops relative to the spraying means toprovide for the uniform coating of the cone tops, and means at thedischarging station for discharging the sprayed cone tops.

Another object of the invention is to provide a machine structure of thecharacter stated including interchangeable chuck sets, one set beingadapted for holding cone tops and the other set for holding closureswhich are flatter in form, such as container bottoms, and means to; holdsuch flatter closures on the chucks by suction.

Another object of the invention is to provide in a machine of thecharacter stated, novel means for individually feeding cone tops andafiixing them removably to the chucks as theyare successively presentedto the cone top receiving station.

Another object of the invention is to provide a machine structure of thecharacter stated embodying novel means for stripping the coated conetops or other closure members from the chucks and presenting them to thecoated element discharging means,

Another object of the invention is to provide in a machine structure ofthe character stated, novel cone top feeding means including downwardlyand laterally yieldable feeder fingers which are normally disposed toengage behind and feed the cone tops step-by-step, and which are readilydeflected downwardly and laterally while being retracted so that theycan pass the cone tops without danger of scraping over the externalsurfaces thereof in a manner likely to mar the same.

Anotherobject of the invention is to provide in a machine structure ofthe character stated, novel means for preventing actuation of theFigurel is a plan'view illustrating a machine".

embodying the invention. v

Figure 2 is a front elevation ofthe'machine. Figure 3 is a rearelevation of the machine. Figure 4 is a horizontal section taken on theline 44 on Figure 2. i

Figure 5 is a fragmentary horizontal sectional view of the slidableclutch-equipped shaft illustrated in Figure 4.

Figure 6 is a vertical cross sectional view taken on the line- 66 onFigure 1.

Figure 7 is an enlarged fragmentary sectional viewillustrating the meansfor lifting the chucks atthe cone top receiving station.

Figure 8 is a vertical cross sectional view taken on" the line 8-8 onFigure 1.

fFig-ure 9 is an-enlarged fragmentary sectional view illustrating themounting of the turret on the indexing shaft.

"Figures'lfl and'll are detail horizontal sectional viewstakenrespectively onthe lines- 10-40 and ll l I on Figure 9.

Figure 12 is a detail sectional view illustrating one .of thealternative forms .of chuck adaptable 'for holding relativelyflat bottomclosures.

Figure 13 is an enlarged fragmentary horizontal section taken on theline 'l 3-] 3 on Figur2';

Figure 14 is a. fragmentary vertical cross sectionalview taken'on theline |4-l4 onFigure 13, the cone top feeding unit being shown as'swungupwardly about its pivotal mounting in dotted lines.

Figure 15 is a fragmentary horizontal section taken on the line I 5-150H Figure 14.

Figure 16 is a fragmentary horizontal sectional "View taken on the linel 6-] 6 on Figure 2.

{Figure '17 is afragmentary vertical cross sectional viewtaken' on theline l'l-i'l on Figure 2.

Figure 18 is a fragmentary vertical cross sectional-view taken ontheline "I 8-l8 on Figure 14.

Figure '19 is a fragmentary sectional view showing-one 'of the chuckspresented for receiving a cone top from the feeding mechanism; a conetop being illustrated as having been justapplied to the chuck by thefeeding screws.

Figure 20 is a detail horizontal section taken on the line20-2fl 0nFigurei19.

Figure 21 .is an inverted plan view of one of the: chuck spindles andthe driving head carried feeding screws with the separating plateremoved therefrom.

. Figures 24 and 25- are detail plan views of one of the conetop feedscrews and separator plate assemblies. and respectively illustratecommence- .ment of the act of separating a cone top from theLsupemosedfstack and the starting point ofthe actual down' feedingengagement. of the screw with the cone top.

Figure' 26 is a diagrammatic development of the'eifectiveisurface of oneof the cone top feeding screws.

Figure 27 is a detail vertical cross section taken on the line 2121 onFigure 19.

Figure 28 is a fragmentary horizontal sectional view taken on the line2828 on Figure 6.

Figure 29 is a fragmentary vertical. cross section taken on the line2929 on Figure 28.

Figurefil) is. a diagrammatic view illustrating a development of theeffective surfaceo'f the indexing cam and its association with theindexing rollers.

Figure 31 is a fragmentary horizontal section taken" on the line 3|-3lon Figure 8.

Figure 32 is a fragmentary vertical cross section takenon the line 32-32on Figure 31;

Figure '33 is a somewhat diagrammatic face 4 view and part verticalsection illustrating the cooperative relation of a chuck spindle, thechuck spindle lifting and lowering means, and the spray at the firstspraying station.

Figure 34 is a somewhat diagrammatic face view and part vertical sectionillustrating the cooperative relation of a chuck spindle, the chuckspindle liftingand lowering means, and-the spray at' the second sprayingstations Figure 35 is a diagrammatic view illustrating a cone top andprogressive-spray positions-fattained ineach of: the first and secondspraying operations. a

Figures-36and 37 are fragmentary section'a views illustrating the firstoperation spray control valve and the actuating cam, the non-sprayingposition of the parts being illustrated in Fig-- ure 36 and the valveopen .or effectivespraying position being illustrated in Figure 37.

Figure 38 is a face view of the parts -illustrated in Figures 36 and37,-the valve actuator .being shown locked in ineffective positionaswhenno cone top is present to be sprayed. 7

Figure 39is an enlarged sectional view "taken through the spraycontrolling valve .of Figures 36 to 38, all valve elements beingillustratedin. the closed position.

Figure 40 is a detail face view of the-sprayed cone top extractor, oneof the extractor arms being shown in section.

Figure 41 is a detail horizontal sectional ;view

taken on the line 4 l4 I on Figure 40.

Figure 42 is an enlarged:fragmentarycrosssec- .tional view taken on theline 42-42 on Figure-:41.

Figure 43 man enlarged. fragmentary plan view illustrating thecooperative relation of theisprayed cone top extractor and thedischarging'means'jthe extractor being shown in. horizontal. section.

Figure 44 is an enlarged fragmentary crossisection taken-on the line M-Mon Figure 1.

Figure 45 is a detail sectional viewehi'iilalr to Figure 37 andillustrating thespray controlling position of the second operation spraycontrol valve.

Figure 46 is a fragmentary vertical cross-sectional view taken. on theline 46-46 on Figure rality of equidistantly spaced, vertically disposedcone top holding chucks one of'which ispresented at each of the stationsby each step movement of the turret structure.

In the particular disclosure herein made, six cone top holding chuckunits are mounted on the turret structure and the machine may thereforebe termed a six station machine. See Figure 1. At the first of thestations, the cone top receiving station, there is provided a cone topfeeding equipment generally designated C and through the medium of whichcone tops are individually applied to the chucks as they aresuccessively presented at this station. The next of the six stations isan idle station generally designated D, and this idle station isfollowed by the first operation spraying station generally designated Eand whereat is mounted the first operation spraying equipment generallydesignated F. After the chucks leave the first operation sprayingstation E they are presented at the second operation spraying stationgenerally designated G whereat the second spraying unit generallydesignated H is mounted, and from thence the chucks are moved to thedischarging station. The discharging station is generally designated Iand at thi station the sprayed cone tops are removed from the holdingchucks by an extractor generally designated J and are discharged fromthe turret structure by discharge feeder means generally designated Kand are delivered to a suitable drier structure, the intended positionof which is indicated by dot and dash lines at L. The drier mechanismmay be. of any suitable structure and forms no part of the presentinvention.

The framing structure includes a base from which rises body framing 6whereon is supported a table portion. 1 having a turret well or opening8. See Figures 1, 2, 3. 6 and 8.

Within the body framing and on the base 5 is mounted a frame housing 9having a removable top portion Ill which is equipped with a verticalbearing I l for rotatably receivingthe turret shaft l2. It will beobserved by reference to Figure 8 of the drawings that the shaftprojects above and has an indexing disk l3 secured'to its lower end. Thedisk is equipped with six depending indexing rollers I4. one for each ofthe turret stations or chuck eouipments. and these rollers areengageable in the indexing groove formed in the indexing cam l5 which islongitudinally adjustably secured. as at IS, on the main cam shaft ll.It will be observed by reference to Figures 6 and 8 of the drawings thatt e shaft I1 is horizontally disposed and is rotatab e in bearings l8provided therefor in the frame housing 9 and in a supplementary endbearing l9 which is secured, as at 28. to the base 5. The shaft I! alsocarries other cams and actuator devices but these. and also the meansfor driving the shaft, will be described later.

A driving head 2| is secured to t e upper end of the shaft l2 and thishead prefe ably is formed of .steel and is secured, as at 22, to theturret body or rotor 23 which preferably is formed of aluminum.

The turret body is equipped with a peripheral flange and skirt e uipment24 encompass ng the well 8. and this body also includes a smalldiamspray collecting hood 32 is attached to the cone top and ductstructure 21, 28 and it will be observed by reference to Figures 1, 6and 8 of the drawings that this hood is mounted over the sprayingstations E and G. The hood 32 has an entrance opening 33 and an exitopening 34 for permitting free movement through the hood structure ofthe cone top holding chuck equipments later to be described. This hoodstructure also includes openings 35 for accommodating the positioning ofthe spraying equipments generally designated F and H. The hood structure32 also is rigidly secured to the table 1 through the mediumof mountingbrackets 36. See Figure l.

The turret body 23 is provided with six vertically disposed andequidistantly spaced chuck spindle bearings 31 for rotatably andverticallyreciprocably mounting the chuck spindles 38. See Figures 8, 19and 27. Each spindle 38 is equipped at its lower end with a tootheddriver head 39 and a holddown collar 40 which are clamped against thespindle shoulder 4| at the lower end of the spindle by a securing nut42, the

collar 40 being mounted on anti-friction bearings 43. Each collar 40includes side extensions 44 from which socket sleeves 45 projectvertically in parallel spaced relation to the respective spindle 38.These sleeves telescope in sockets 46 depending from the turret body 23,and compression springs 4'! are mounted in the sleeves and sockets andconstantly urge the spindles downwardly.

At its upper end each spindle 38 is equipped with an abutment head 48and an underlying shock absorbing washer 49 of fiber or similarmaterial. Each abutment head and its washer equipment 49 is engageablewith the upper extremity of the respective bearing 3'! so as to limitdownward movement of the spindle under the urge of the spring equipments41. Each spindle 38 is equipped at its upper end with a reduced andexternally threaded extension 50, and a shedding skirt 5| which restsupon each abutment head 48 in the manner best illustrated in Figure 19of the drawings.

A suction duct 52 is provided in the upper portion of each spindle 38and opens endwise through the reduced upper end 59 and laterally betweenthe vertically spaced bearing portions 31 in the manner clearlyindicated in Figure 19. Each of these ducts 52 communicates with theindividual duct 53 formed in the turret body 23 and which opens throughthe bottom face of th 'hard metal valve ring 54 which -'is secured, as

at 55, to the bottom of the turret body center. The ducts 53individually communicate with the arcuate groove 56 formed in the upperface of a valve ring 51 disposed beneath and in surface contact with thevalve ring 54 and surrounding the shaft i2 and the ant fri tion bearing58 which supports the weight of the shaft and the turret structure. SeeFigures 8 and 9. It will be observed by reference to Figures 10 and 11of the drawings that the valve ring groove 56 extends almost threequarters of the distance about the ring or far enough to take in thecone top receiving station, the cone top discharging station andstations intervening in the direction of travel of the turret. The valvering 5! is adapted to be connected, as at 59, with the suitable suctionsource (not shown) and is yieldably pressed against the cooperatingvalve ring 54 through the medium of a plurality of compression springequipments 60 which are interposed between the under surface of the rin51 and the upper surface of the turret bearing ll The ring 51 is alsosecured against rotation bya pin equip-.-

m'ent-G ll. The'contacting faces of the valve rings 541andil may belubricated through duct-equi ments. 62'. The purposev of. providing thesuction tomsare being sprayed.

.A. chuck unitis removably mounted at the upper'end of each spin'dle38.each said unit includ-- inga mounting head 63 having a threaded boreforreceiving the/externally threaded spindle extrerrnty 50,1 and anupstanding" shank- G4 'sur-- mountedv by: a chuck cup 65 having agenerally coniformirecess therein for receiving the cone top bodies 66-and a center opening 6'! for receiving the downwardly projecting pouringspout portion 68 f. the cone tops in the manner clearly indicatedfiinFigure 19 of the drawings. In this par- 'ticular illustration the conetop spout portions 68 are shown equipped with a thread for receiving. athrea'dably mounted'closure cap, but it is to be understood that these.come top pouring spouts maybe of the simple bead type adapted to receive cro'wn caps as closure elements. When applie'di't'o'the holdingchucks 65 the cone tops 66 are-removably' held therein by frictionalengagementor the spring pressed balls or detentsBQ with the externalsurfaces of the'spout portions 68 in the manner clearly indicated inFigure19, said; balls or deterrts being equidistantly spaced about thechuck openings 61 in the manner clearliyillustrated in FigureZO.

Each'cone top includes an extended flange portion' HI through the medium.of which it is to be attached to a container body, and these flangesare's'o'iormed on the cone tops as to provide a heel? portion 11 whichis sprayed by'the second operation spraying equipment H, the mainintethe suction or 'air evacuation effected through the valve equipmentsillustrated in Figures 9, and '11 of the drawings will be effective tohold the relativelyfiat end. closure elements 76' on the chucks inthemanner illustrated in Figure 12 from the time at'which they areapplied tothe chucks at station C until they are extraotedor removedfrom the chucks at station J. See Figure 1,

' The means for individually feeding and appl ing'cone tops to thechucks at station C will now 'bedescribed. A bracket i1 is secured tothe table framing in the position illustrated in" Figures 1 and 2 of thedrawings, and a mounting head 18 is'secured' upon this bracket. eeFigures 1, 2, and '13 through 18. Th 'mounting head 18 includes a pairof side arm portions 19 in which a shaft 80 is secured. A bevel gear 8!is rotatably mounted on the shaft and has a driving sprocket '82'aflixed thereto. See Figures 16 and 1'7. A housing member 83 isrockablymounted, as at B4, on theshaft 80 and aboutan anti-friction bearing '85surrounding thegear 8|. An arm 85 is affixed tdthg housing member in theposition clearly il- "lh'strated in Figures 13 and 17 "of the drawings.

assu es:

This armalso formsapart ofl therockable mount ing of the housing memberandr'i-s extended-to overlie the extension. 8'!- from the mounting head18- so as to form a stop limiting .rocki-n movementof the housing member83. A springpressed detent 88 carried by the extension 81- isengazgeablein a recess 89 formed in thearm86tzand serves to secure the housingmember- 83 inz-the. normal position illustrated in Figures 2v and 14-of. the drawings. See also Figure 1-6. It is to be:understood that bywithdrawing the-detent as from the receiving recess 89 the housing,-member--83 can be swung from: itsv normal position illustrated inFigures 2 and 14- to an out of-theway position. in the manner indicatedbydotted lines on-Eigure 14.

A vertical bearing 90 .is providedin the housing member 83 and serves torotatably supporta shaft member 9'! which has a bevel-gear 92-5.ffixedthereto withinthe housing 83 and extends vertically from said'hollsinginto the. feeder-casing 93 which is secured, as at-94,-on'the top of thehousing. See Figures 2, 13;:14and-15 oflrthe draw.-

mgs.

Th feeder casing 93 forms a part of. afeeder. structure which isremovable. as. a unitLfrom the housing member 83. This unit includes aremovable cover 95 and a feederwell or opening/96' through which thecone tops are fed and about which rise a plurality of'conetopstackingrods or standards 91. Aplurality offeeder shattsfifl},three being employed in this partiCuIardiScLOsUre, are arrangedvertically andequidis-taritly spaced relation about the well. inthemanner clearly illustrated in Figures I13 and 15. Each shaft 98 isrotatable in bearings- 919.. and; is equipped with a spur gearJDI].Thespur gears Hi0 all mesh with a ring. gear l fll which isrotatable inand. partly defines-the well96. Rotation is imparted to the ring gearIlll through ani'dler gear I02 which is mounted on a shaft 403'rotatable in bearings H14 in the manner clearly illustrated in Figurel4, said idler gear beingin turn driven. by a spur gear H15. "SeealsoFigures 13 'and15'.

The spur gear I05 issecured to a sleeve which isfi eely rotatable aboutthe. shatt 9 I andis'keyed to an overload release housing H11in-themanner clearly illustrated in Figure 18- of-the drawings. Theupper-end of the shaft 9| extends into the housing [01 and has keyedthereon. adisk J08 which is opposed by a spring-presseddisk lOileonneoted to rotate with the housing-J01 but being free tomovelongitudinally therein. The yieldably opposed disks-I08and.-|'El9.-are -recessed to provide sea-ts in which to-receive driverball I' m, and it will be apparent by reference to'Figure 18 that undernormal conditio-ns rotation imparted to the shaft 9| will be transmittedthroughthe disks I08, 109 and the housing 101 tothe driver spur gearI05. Should anyobjectionable overload be imposed upon the feeder deviceshowever the disk I09 would move longitudinallyandfree. the

balls I [0 thereby to. permit rotation oftheshaft 9| Without impartingthat rotationto-the driver gear I05. 2

A feeder screw assembly generally-designated V spraying stations.

an edge recess I I1 providing a stripper or separator edge H8. SeeFigures 19 and 2-2. Each feed screw H4 has an edge clearance whichextends downwardly very gradually, as at H9, to merge with a dwell shelfI20 which extends under and beyond the separator edge portion H8 of therespective plate H2 in the manner clearly illustrated in Figures 23through 26, said shelf in turn leading to or merging with a higher pitchlowering shelf portion I2I which merges into a still higher pitch feedergroove I22 defined in part by the starting point I23.

It will be observed by reference to Figures 19, 24 and 25 of thedrawings that the feeder screw assemblies rotate in counter-clockwisedirection, and as these assemblies rotate, the flange extension 10 onthe lowermost cone top 66 will fall through the edge recesses H1 in theseparator plates H2 and onto the upper surfaces of the screws H4. Theadvancing separator edges H8,

of the. asemblies will engageover the cone top flanges in the mannerclearly illustrated in Figure 19 and cause said flanges to first idle onthe dwell shelf portions I20 of the screws and then progressively passdown over the lowering portions ings I31, and each sleeve has mountedtherein a vertically reciprocable lifting and lowering spindle I38 whichis spline-connected to the respective sleeve, as at I39, at its lowerend. Each sleeve carries a worm wheel portion I49 which is engaged witha worm gear I4.I mounted on a driver shaft 142, said shaft beinghorizontally rotatable in bearings I43 in the supplementary housing, andequipped with a pulley I44 without said housing.

Rotation is imparted to the shaft I42 by a belt I45 which passes over adriver pulley I46 mounted on a driver shaft I41 which is rotatable inbearings I40, and over an adjustably mounted tightener pulley I49. Theshaft I41 preferably is equipped with a hand wheel I50 through themedium of which-machine partsmaybe turned over by hand.

I2I and through the feeder screw portions I22,

justably mounted tightener sprocket I26'being engaged with said chain,

The means for lifting and lowering the chuck spindle at the cone topreceiving station will now be described, attention being directed toFigures 2, 6 and 7 of the drawings.

A spindle lifter head I21 is supported at the A upper end of a slide I28which is vertically slidable ina guide member I29 secured to the framehousing 9 and equipped at its lower extremity with a" cam engagingroller I30, The slide I28 is urged downwardly by a compression springI3I which is interposed between a pin I32 carried by the guide memberI29 and a pin I33 projecting from the slide member I28. The spring I3Iserves to yieldably hold the slide. against the rotary actuator cam I34which is secured upon and rotates with the main camshaft I1.

The operation of the cam is so timed that it spindles is presented atthe cone top receiving station so as to cause the lifter he'ad I21 toengage therespective spindle driver head 39 andlift the spindle into thecone top receiving position clearly ilustrated in Figure 19 of thedrawings.

At the first and second operation spraying stations the chuck spindlesmust be lifted and also rotated during the spraying operations, thespindle being lifted a considerable distance and at .a

.willlift the slide I28 each time one of the turret graduallyaccelerated speed at the first operation spraying station, and beinglifted only a short distance at the second operation spraying station.See Figures 4, 28 and 29 of the drawings. 1 The frame housing 9 includesa supplementar housing portion I35 in which two identical spindledriving units are mounted, one thereof being aligned at each of thefirst and second operation Each unit includes a driver sleeve I36which'is rotatable in anti-friction bear- The shaft I41 is driven bypulley and belt power transmitting connections I5I from a motor I52mounted on the machine base, any suitable shift able clutch equipmentI53 being included so that the driving connection between the motor andthe shaft I41 can be made or broken at will A clutch shifter I54 isprovided and isoperable by a yoke I55 which is secured upon a rock shaftI56 mounted in bearings I51. A crank arm I58 is secured upon the shaftI56 and is connected .by a thrust link I59withan actuator lever I60which is pivoted, as at I6 I, on the machine framing. Another crank I62is secured to the shaft I56 and has connected thereto anactuator I63which may be extendedto the other side of the machine or to a pointremote from the actuator lever I60 so as to enableengagementanddisengagement of the clutch I53 from said remote point.

I The shaft I41 extends through a housing I64 and is equipped within thehousing with a driver worm gear I65 which meshes with and impartsrotation to a worm wheel I66 secured on a shaft I61 which. ishorizontally rotatable in supporting bearings 168. See Figures 4 and 5.A clutch head I69 is loosely mounted on the shaft I61 and is adapted todrive the driver spur gear I10 through an overload release connectiongenerally designated I1I,whenever the driver clutch .head I12. which issplined on theshaft I61 is moved into driving contact with the clutchhead I69.

A clutch head shifter yoke I13 engages the driver clutch head I12 in themanner clearly ilmain cam shaft I1, thereby to impart rotation to saidmain cam shaft.

A driver sprocket I11 is mounted on a sleeve which is freely rotatableabout the shaft I61 and which is normally intended, to be driven withthe shaft through the medium of the overload release connectiongenerally designated I18 and whichis secured up:n the end of the shaft I61 in the manner clearly illustrated in F'gure 5 of the drawings. Thesprocket I 11 normally serves to drive the cone top drierdiagrammatically indicated at L in Figure 1 through the medium ofthe'driver chain I19. This drying mechanism forms no part of the presentinvention and it is to be understood that any approved form of drier canbe associated with the novel coating machine herein disclosed. exampleof an acceptable form. of drier is tobe found in the U. S. Letters.Patent.1,570,122, issued toBisset on January 19,

Each ofthe spindles I38 has a toothed driving 1 head-I80 removablyafiixed at its upperend, as

at..I8I, and also carries. a lifter head I82 which is movable verticallywith the spindle but has anti-friction bearing thereon, as at I83, sothat it can; be held motionless while the spindle rotates therein. Eachlifter head I82 has trunnion connectionwith' an actuator crank I84secured to.-a rock shaft I85 which is rockably mounted in: bearings I06.See Figures 4, 6, 28 and 29.

The shafts I85 also have actuator cranks I81 "afiixedto the ends thereofremote from the cranks I84- and. which are individually connected. tothrust .links I88 which have forked ends I89 each disposed to-straddle ablock I90 on the main cam shaftI'Iin the manner clearly illustrated inFigthe'main camshaft II.

Itwill bereadily understood by reference to ,Figure 33 of the drawingsthat the cam associated with the first operation spraying station willsprayheadiF through the .line or duct'2'03: The

valve HV similarly has a controlled pressure line connection 209 withthe spray head Hand also has a main line pressure connection with the.spray head H through the line or duct 2I0, said line also being adaptedtolconnnunitzate-with the atmosphere for exhausting purposes'ina mannerlater to be described.

A. spray fluid line '2I I connects between" the reservoir. I93 and thespray headF, and'asimi lar' spray fluid line 2I'2, connects between:said reservoir and the spray head H, .each .sa-idfline having a fluidregulator 2I3. connected .therein asillustrated in Figure 47; It will beobserved by reference-to Fig'ure39 of. the drawings that each of "thevalves ,Fv-and HVhas a chamber 2I4 through whichicommunicatiorrcan. behad through a spring sea-tedjand cam unseated tap et valve2I5-betweenthe-lines '292and'20lor the lines 203 and 209. Each valvealso includes a chamber 2I6 and a cross duct 2I'I' through.whichucomrnunication can be had through a similar valve 2I'8 betweenthelines 205: and 208' or 200 and 2I0-. A chamber2l9 also is providedin'each' valve, and associated therewith is an exhaust .dllct 220 whichcommunicates with atmosphere through a seat conserve. to. lift thespindle I38 and the overlying chuck spindle 38 a considerable distanceand at' a gradually accelerated rate, whereas the cam I93 associatedwith the second operat onspraying station will lift the connectedspindle I38 and the overlying chuck spindle 38 onl a short distance,.See Figure 34. It will be obvious also that during the .whole time thedriving read I80 oflthe spindle.I38 is in. contact with the driver head39 on the respectivespindle 38, the rotation of the spindle I38:Wll1 beimparted to the respective: chuck cup65 and the cone top yieldablyaffixed" thereto.

The spray head F disposed at the first opera- .tion spraying-station-is.adjustably sup-ported, as

at I94, -on a standard I95 arising from the table 5, and: the spray H iss milarl adjustably supported as at-I96-, on the standard I91 arisingThe spraying system includes a spray fluid reservoir-l98 into which airis directed through a regulator I99 and a l ne or duct 20!] from themain .air supply line 20I. Air is a so directed at controlled pressureto the valve FV from the main supply by a line 202, and to the valve HVby a line 203. Air is also directed at main line pressure through asolenoid valve 204 and through ducts or lines 2 5 and 206 respectivelyto the valves FV and HV in the manner clearly indicated in Figure 4'7.-The valve structures and the actuating devices therefor are bestillustrated in Figures 36-and 39 and in Figures 45 and 46. It: is to beunderstood that the solenoid valve 204%issoconnected in. the system thatit w ll be: closed each time the clutch equipment I53.

' disconnected.

The valveFV is connected through a controlled pressure line 201 with thespray head F and also.

has a main line pressure connection with the trolled by a tappet valve22I. It will be apparent that when thevalve 22I is unseated, the chamber2I9 and the .connectedline or duct 208 or 2I0.will be exhausted, toatmosphere.

It will be observed by'reference to Figures 36 to 39 and 45 that thevalvesare' spring seated and that thetappets thereof extend o-utside theI A 'ro'ckable actuator 222 is piv ,otally supported, as at 223, on;each of the valves valve casing.

FV and HV, the pivotal mounting being dis posed between thevalves .2I8and 22I. Each actuator is equipped with an adjustable tappet 224"disposed .for engaging and unseating the valves 22 I' whenever theactuator i in its elevated position, as shown in Figures 36 and 38, andfor unseating thev valves 2I5 and H8 and permitting said valve ZZI toseat whenever the' actuator is in its lowered position as illustrated inFigur 37 An anchored spring 225 holds the actuator 222 associated withthe valve FV against an actuator cam 226. It will. be apparent byreference to Figures 36 and 3'7 that the cam-is provided with aperipheral clearance dwell portion 22'! 'ex tending almost of thecircumference'of the cam, and an adjustable crest dwell portion 228.When the clearance dwell portion 221 of the cam is engaged by'theactuator 222, the actuator will. be positioned as illustrated in Figure3'7 to seat the valve 22I and open both-valves 2I5 and 2I8therebyto'supply needle valve openingair, atomizing air, and sprayingfluid to the spray head F andbring about a spraying of the positionedcone. top. It will also be apparent that when .the .crest' dwell portion228 of the cam is being .engaged by theactuator, the valves 2I5 and 2I.8will be seated tocut oif airand fluid from the spray head and. the valve22L will be opened to exhaust pressure from the sprat head through theline 208'.

The actuator 222 associated with the valve 'I-IV is yieldably,heldl'byfan anchored spring 229 againstthe periphery. of an. associatedcontrol cam. 230,- and like the previously described controlcam 226',this. cam incluoles a clearance dwell portion 23f andv a crest .dwellportion 232; which functionlike the clearance and crest dwellportionspreviously described except for 'the'fact and therefore provides foronly a short spray interval. It will be apparent by reference to Figures3 and 4 of the drawings that the crest and dwell portions of both of thecams 22-6 and 238 can be adjusted to var the spray intervals.

Each of the cams 226 and 238 is mounted on a shaft 233 which isrotatable in a frame bearing 234 and has a driving sprocket 235 affixedthereon. The shafts 233 are driven by a Single jchain236 which passesover both sprockets 235, over an adjustable idler sprocket 231 and overa driver sprocket 238 secured upon the main cam shaft l1.

Each actuator 222 is equipped at its free end with a latch head 238,said latch head being disposed for engagement with a latch 240 carried-,by a rocker member 241. Each rocker member isurged byan anchoredspring 242 against an adjustable stop 243, and when disposed againstsaid stop is positioned tocause the latch member carried thereby toengage under the associated latch head 239 in the manner illustrated inFigure38 for holding the respective actuator out of efiective engagementwith the respective cam 226 or 236; It will be obvious that when anactuator 222 is latched in the position illustrated in Figure 381110spraying function can be performed.

Each rocker member 24l is secured on a shaft 244 which is rockable insuitable bearing equipment245, and each shaft is connected by crank andlink connections 246 with a swingably mounted arm'241 whereon is mounteda roller 1248'; It will be observed by reference to Figures 1 and 3ofthe drawings that the rollers 248 are so positioned that they willpermit free passage of the chuck cups 65 but will be engaged anddislplacedby engagement with edge portions of cone tops 66 mounted insaid cups in the manner illustrated in Figure 19 of the drawings. Thisenigagement with the chuck cup borne cone tops is (effected throughsuitable openings 249 formed in j the hood 32. See Figure 3.

I itwillibe obvious that as each chuck and the cone'top to be sprayedthereon which has been applied the chuck cup at the receiving stationapproaches a spraying station, the extended "flange portion of the conetop will engage and displace the respective roller 248 and movetherockerfmember 24! from the normal position illustrated in Figure 38 tothe out of the way posi- "them, and consequently the rocker member 24!will be left in th normal position illustrated in Figure 38, in whichposition the actuator latch head 236 will engage under the latch 240 andsecure the actuator 222 in the ineffective position illustrated inFigure 38, thus preventing effective Atthe extractorstation there ismounted an extractor head 256 to which a pair of extractor arms 251 areadjustably secured, as at 252, to depend in-spaced relation, one at eachside of 'the pathof travel of the sprayed, chuck carried L cone tops;See Figures 40 and 41'. The arms 25l are equipped with aligned grooves253'for receiving the flange portions of the cone tops, and these flangeportions move into the grooves as the respective sprayed cone top ismoved into the extractor station by the respective chuck cup .65. One ofthe arms 25! is equipped with two springp'ressed detents 254 whichengage the flange portion of a cone top when positioned in the armgrooves so as to yieldably grip the cone top. See

Figures 41 and 42.

The extractor head 250 is secured, as at 255, to the upper end of avertically reciprocable rod 256. The rod is vertically movable inbearings 251 and is equipped with an abutment collar 258, a compressionspring 259 being interposed between the collar and the overlying frameportion and serving to yieldably hold the rod in its normal, loweredposition, namely, the position in which the arm grooves 253 are disposedto receive the flange portions of cone tops as they are indexed to theextractor station.

A sleeve 260 is secured by a cross pin 26! to the lower end of the rod256, and this sleeve includes an arm extension 262 which is verticallyslidable in a guide 263 secured to the frame housing 9 and which iseffective to prevent turning of the rod 256 about its axis. See Figures8, 31 and 32. A bifurcated crank arm 264 is secured to a rock shaft 265which is rockable in suitable bearings 266. The arms of th crank member264 straddle the rod 256 and are equipped with rollers 261 which engagein recesses 268 in the sides of the sleeve 268 so that up and downswinging movement of the crank member 264 will impart verticalreciprocation to the rod 256 and the extractor head carried at.the upperend thereof.

A crank arm 269 is secured to the rock shaft 265 and is connected by anadjustable link 210 with an actuator arm 21! which is pivoted, as at212, on the framing and is equipped with a roller 213 engaged by arotary cam 214 which is adjustably secured, as at 215, on the rotary camI34 hereinbefore referred to. A retractile spring equipment 216 servesto hold the actuator arm roller 213 against the cam 214. See Figures 2and 6.

The cam 214 is so timed that each time a cone top is indexed to theextractor station and received in the extractor arm grooves 253 in themanner illustrated in Figures 40 and 41, the rod 256 will be lifted andthe arms 251 will extract the cone top from the chuck cup 65 in which itwas sprayed and elevate the same so that the pouring spout portion 68thereof will be clear of the upper extremity of said cup.

The sprayed cone top discharging means hereinbefore referred to andgenerally designated K will now be described. Upon a superstructureframing 211 mounted on the table 1 are provided laterally spaced conetop supporting guideways 218, said guideways including curved receivingportions 219 the receiving ends of which are disposed in alignment withand close to the vertically reciprocable extractor arms 25!. See Figures1 and 43 of the drawings.

A straight line slideway 280 is provided beneath the cone top supportingguideways 218, and a feed slide 285 is reciprocable therein toward andfrom the drier L. Two feeder units 28 2 are 'mounted on the slide andeach includes a base 283 which is removably secured to the slide, acarrier 284 pivoted, as at 285, on the base for lateral swingingmovement about a verticaLaxis,

an arm extension 286 being provided and engaged with a'compressionspring 281 for yieldably resisting saidlateral swinging movement. t Afeed ,finger288 is mounted ona horizontal pivot 289, on each carrier284'and is urgedby a com;- pression spring 290, to the normal elevatedposition illustrated in Flgures2, 3 and-44.0f the drawings. Eachfeederfinger 288 is equipped with, a side edge clearance 29I- which isengageable with the coniformportion of cone topsasthe slideisbeingretracted after a forward feeding movement, thus enabling thefeeder fingers to. be deflected laterallyand downwardly in a manner toclear theforwardlyfed; cone tops without danger of :damaging surfaceportions thereof.

A bracket .292ldepends from the slide '28] .in the manner clearlyillustrated inFigures 2 and 4A of the .drawings and is :connected by alink 293lto a crank arm294 which is secured to a rock shaft 295rrockablymountedin a bearing 296 supported on the framing. Acrankzlll issecured to the other, end, of theshaft 295 :and is connected by anadjustable link, 298st a crank pin 299 which is:.adjustab1y secured; totheccrank disk 300., It Willbeobserved by referenceqto Figures 2 and 6of thedrawings thatthe crank-,disk. 300 is adjustably. secured to a,carriervdisk, 30l which is affixed to-the endcf lthemain cam shaft l1.

On the superstructure framing ,211 is supported a vertical bearing302;which..rockably supports a feedershaft .303. Thesshaft303is equippedwith a crank 364231, its lowerendwhich i-s link-connected, as; at 305,to the slide28l. Itwill be obviousby referenceto Figures 2, 43 and 44ofithe drawingsathatyas the slide is reciprocated, rockingrmovementwilllbesimparted to the shaft 303.

A feeder arm ,306. is:secured to the upper endwof the shaftt3fi3l and;iscurved so that.it can .extend throughbetweemthe extractor'arms 25| inthe mannercclearly illustrated in: Figure 43. The

feeder armhcarriesla dependingfeeder finger 301 at. itsfree end.

The I oscillation .ofpthe feeder arm 306 is so timed that it will bedisposed in the position illustrated .inFigure/B each time the.extractor varms After eachchuckcup 65-isindexed to the receiving stationit will be elevated to thecone.

top receiving position illustrated in Figure 19 by the elevatingmechanism illustrated in detail in Figure '7. While in its elevatedposition the cup will, have a cone top affixed thereto by the feederscrew assembly equipments illustrated in detail .in Figures 19 and 22through 26; said .assemblies forming a part of the cone top feedingmechanism illustrated in .detail in Figures 13 through 18.

The chuck bearing'thetconertop to be sprayed is .next indexed to theidle-stationD and from thence through the hoodopening 33 to the firstoperationlspraying station E whereat is positioned the firstlopera'tion'spray'head F. At this, station the chuckwill be rotatedand'lifted by the equipment illustrated, in Figure :33 so. as topresent, the cone-topfor having the interior .portion thereof sprayed,the-control cam I92 being. effective; in the .manner hereinbefore.describedin detail, to

of lift. By thuszrotating the cone top, andisimultaneously lifting thesame at a gradually increasing rate of lift, the rate of lift willincreaseeac-r cordingly as the diameter of the portion being ,sprayed,and consequently the area being sprayed,

decreases, thereby assuring the provision of a uniform coatingthroughout the whole ofthe internal. area of the cone top" 'Inotherwords, the lifting of the cone top is slow asthe spray :strikes thelarge diameter of the. cone top and increases as the diameter decreases.Thisnprolgressive rate ,of lift and uniform spraying is diagrammaticallyindicated inFigurel35 byfllhe varied spacing of the spray lines 308.When the spraying of a cone top is completed, the chuck spindle: will belowered and the'chuckiwillbe advanced :to. the second operationsprayingstation G.. l

At the second operation spraying station, the partially sprayed cone topwill be lifted and rotated by the mechanism illustratediniFigurel34 soasto effect the second, operation spraying, namely, the spraying of theheel portion of the cone top. As has been previously described, theamount of liftimparted to the cone. top carrying chucks at this stationis comparatively slight and since the heel is of uniformldiameter, auniform lifting of the cone topswill suffice. This second operationspraying of the cone tops is illustrated diagrammaticallyat 309.inFigure 35; vAfter the second operation spraying. function is completed,the cone top is loweredland indexed to the extractor station.

At the extractor station, the sprayedicone top is movedinto thereceiving grooves 2.53 in-theextractor arms 25! inthe manner clearlyillustrated inFigures 40, 41 and, 43 of the drawings, At this time thefeeder arm finger 301 will be disposed at the position illustrated inFigure 43. When the sprayedcone top has come to rest at the extractorstation-the extractor head 250 is lifted andcthe arms-251 extract thecone top from the chuck cup 65 and move it upwardly clear of the path-oftravel of the cup andinto the path of. traveluof the feeder arm finger301. It will beobvious by reference to the central portion of Figure 8that a holder hook Z is fixedly mountedin position to overlie each headcollar as it is presented at the sprayed cone top extracting orstripping station, and as the extractor head 250 is lifted, said hookpositively holds the collar 40 and the'as sociated cup against movementupwardly with the extractor head and the cone top engagedin the groove253 thereof. The arm 306 swings from the position illustrated in Figure43,. to theposition'illustrated in Figure l and moves the cone top ontothe guideways 218 over which they "are fed by the reciprocating fingers288 to the-drying machine L or to any, other take-away mechanism. Eachtime the feeder slide 28l is retracted'after each forward feeding step,the feeder fingers 208 will be deflected laterally and downwardly inamanner for avo-idingdisplacement orldamaging of "the conetops 66.-

In preparing the machine for the spraying-of such ends, the cone topchucks65 are replaced by the suction chucks shown in Figures-l2. Thespraying of the fiat can ends is preferablyperformed at only the secondspraying stationaby liftctheacone top-at; a .gradually-lincrea-sing;rate;0f' flat ends, the arm 24'! is moved for positioning

